Safety first: Unplug the washer before accessing the motor or underside of the machine.

Inspect drive motor connections: Remove the rear panel to access the drive motor. Check the multi-pin connector and the smaller tachometer connector for secure fit and signs of corrosion or damage.
Check harness: Follow the motor harness to the control board, looking for chafed insulation or pinched wires. Repair or replace damaged sections.
Test tachometer: With a multimeter, measure resistance across the tachometer terminals on the motor. Compare to UniMac specifications. An open or shorted tachometer requires motor replacement (tach is often integrated).
Spin test: With the belt removed (if belt-driven), spin the motor shaft by hand while monitoring AC voltage from the tachometer; a small voltage should be generated. No output indicates a bad tach.
Control board: If the motor and tach test good, the main control's motor drive circuit may be faulty and should be replaced by a professional.

Washer will not spin or shows E06 during spin cycle; drum may tumble but not reach high speed.

Possible Causes